CN104096471A - Near-zero sulfur dioxide emission absorption tower for coal-fired power plant - Google Patents
Near-zero sulfur dioxide emission absorption tower for coal-fired power plant Download PDFInfo
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- CN104096471A CN104096471A CN201410322796.2A CN201410322796A CN104096471A CN 104096471 A CN104096471 A CN 104096471A CN 201410322796 A CN201410322796 A CN 201410322796A CN 104096471 A CN104096471 A CN 104096471A
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Abstract
The invention provides a near-zero sulfur dioxide emission absorption tower for a coal-fired power plant. The absorption tower comprises a spray tower body; a seriflux pool is arranged at the lower inner part of the spray tower body; the area above the seriflux pool is an absorption area; a first baffle plate and a second baffle plate are arranged in the spray tower body, and divide the absorption area into a first spray chamber, a flue gas steering chamber and a second spray chamber; the first baffle plate extends into the seriflux pool from the upper inner part of the spray tower body; the second baffle plate extends to the top of the spray tower body from the top of the seriflux pool; a flue gas inlet communicated with the first spray chamber is arranged on one side of the spray tower body; a flue gas outlet communicated with the second spray chamber is arranged on the other side of the spray tower body; spray layers are arranged in both the first spray chamber and the second spray chamber. The near-zero sulfur dioxide emission absorption tower is different from the conventional spray tower in structural form, and is low in construction investment and operating cost, and high in desulphurization efficiency.
Description
Technical field
The present invention relates to a kind of desulfurizing tower, particularly a kind of sulfur dioxide near-zero release absorption tower that is applicable to the above large coal-fired power plant of 300MW, belongs to desulphurization plant field.
Background technology
Since " 12 ", for environmental problems such as gray hazes, country has put into effect a series of policies and measures power industry environmental protection work has been proposed to new target.Especially since 2013, country controls and has proposed requirements at the higher level coal-burning power plant's flue dust, sulfur dioxide, nitrogen oxide.In February, 2013, Environmental Protection Department issue < < is about carrying out the bulletin > > (2013 No. 14) of the special emission limit of atmosphere pollution, require priority control region (47 cities of 19 provinces) newly-built coal-fired unit special emission limit of whole execution from 1 day April in 2013, flue dust, sulfur dioxide, nitrogen oxide are respectively 20,50,100mg/m3; For active service unit, what be positioned at main city, priority control district carried out special emission limit from 1 day July in 2014, non-main city during " 13 ", carry out special emission limit.In September, 2013, State Council promulgates < < prevention and control of air pollution action plan > >, and power industry energy-saving and emission-reduction work has been proposed to explicitly call for.
According to national requirement, power industry strengthens sulfur dioxide, nitrogen oxide, smoke and dust treatment dynamics, conscientiously improves energy-saving and emission-reduction managerial skills, and the indexs such as unit thermoelectricity generated energy SO2 emissions reach world-class levels.Compare with other industry, power industry is to realize coal-fired efficient, the most effective means of clean utilization.But in the long run,, along with the progressively raising of electric consumption of coal proportion, along with effective improvement of other industry pollution that caused by coal burning, coal-burning power plant will be the discharge rich and influential family of atmosphere pollution.
From the whole society, the improvement of environmental quality is required, coal-burning power plant's atmosphere pollution is controlled and will be the long-term tight process that becomes.In addition, follow the impact of gray haze on environmental quality, some areas government has proposed special requirement to coal-burning power plant.As, Zhejiang Province prints and distributes < < Zhejiang Province's prevention and control of air pollution action plan > >, requirement will be before the end of the year 2017, all newly-built, must adopt flue gas to clean draining technology building fired power generating unit, existing 600,000 kilowatts of above fired power generating unit complete the clean draining technology transformation of flue gas substantially, reach the requirement of gas turbine group discharge standard, flue dust, sulfur dioxide, nitrogen oxide be respectively 5,35,50mg/m3.Part electricity power group has also proposed the slogan of coal-burning power plant's near-zero release pollutant (or for reaching combustion machine standard level) from self-growth angle, and specific aim has been carried out relevant route research and engineering demonstration.If coal-fired unit reaches the emission level of combustion machine, with regard to the removal efficiency of one of sulfur dioxide, approached 99% and even reached 99.5%, existing common spray void tower technology is difficult to reach.The high-lift circulating pump of large capacity while particularly surpassing 6 layers of spraying layer, the equipment type selecting difficulty of China, and operation energy consumption is higher, and institute thinks further reduction energy consumption improves desulfuration efficiency, need to research and develop a kind of Novel desulphurization absorption tower.
Summary of the invention
The object of the invention is to, a kind of sulfur dioxide near-zero release absorption tower for coal-burning power plant is provided, it is different from the version of existing spray column, and has low construction investment, low operating cost, the advantage of high desulfurization efficiency.
Technical scheme of the present invention: a kind of sulfur dioxide near-zero release absorption tower for coal-burning power plant, comprise spray column tower body, bottom in spray column tower body is slurry pool, the region of slurry pool top is uptake zone, in spray column tower body, be provided with the first dividing plate and second partition, uptake zone is divided into the first spray chamber, gas reversal chamber and the second spray chamber by the first dividing plate and second partition, the first dividing plate extends in slurry pool from the top in spray column tower body, and second partition extends to the top of spray column tower body from the top of slurry pool; One side of spray column tower body is provided with the gas approach being communicated with the first spray chamber, and opposite side is provided with the exhanst gas outlet being communicated with the second spray chamber; In the first spray chamber and the second spray chamber, be equipped with spraying layer.
The aforesaid sulfur dioxide near-zero release absorption tower for coal-burning power plant, the top of the spraying layer in the second spray chamber is also provided with demister.
The aforesaid sulfur dioxide near-zero release absorption tower for coal-burning power plant, the first dividing plate and second partition are arranged in parallel.
The aforesaid sulfur dioxide near-zero release absorption tower for coal-burning power plant, the cross sectional shape of described spray column tower body along continuous straight runs is circular or square.
The aforesaid sulfur dioxide near-zero release absorption tower for coal-burning power plant, the top corners place of described the first spray chamber is provided with the first deflector, and the top corners of gas reversal chamber and bottom comers place are equipped with the second deflector; The top of the first dividing plate and the below of second partition are equipped with the 3rd deflector.
The aforesaid sulfur dioxide near-zero release absorption tower for coal-burning power plant, the first deflector and the second deflector adopt flat board or arc.
The aforesaid sulfur dioxide near-zero release absorption tower for coal-burning power plant, gas approach is positioned at the middle and lower part of spray column tower body, and exhanst gas outlet is positioned at the top of spray column tower body.
Above-mentioned top and Di Bu Fen Do refer to the part of the highest and lowest of jobbie; And top, middle part, middle and lower part and bottom are for the relative position relation of same interior of articles different piece is distinguished, it also meets those skilled in the art for the common understanding of belonging positions relation simultaneously.
Compared with prior art, the present invention uses a desulfurizing tower to replace two traditional desulfurizing towers, effectively reduce volume and the floor space of equipment, arrange compacter, effectively reduce the manufacturing cost of equipment, by the first plate washer and second baffle and deflector are set, make desulphurization system runtime system resistance little, the contact flue that there is no independently to arrange the required complexity of two towers, flue gas flow is short.Compare with traditional desulfurizing tower, because diameter of the present invention is larger, the height of slurry pool is less, but volume is very large, contribute to extend the time of staying of lime stone, increase operation rate, reduce the pressure head of Gas wind transmission machine simultaneously, save operating cost, the expenditure of construction of spray column is also lower.
Through experiment confirmation repeatedly, this uses novel sulfur dioxide removal efficiency can reach more than 99%, the sulfur dioxide (SO2) emissions of coal-fired unit can be reached to combustion machine emission level, realizes sulfur dioxide near-zero release.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that spray column tower body cross section is circular structural representation;
Fig. 3 is that spray column tower body cross section is square structural representation;
Fig. 4 is provided with the structural representation of tabular deflector in the first spray chamber and gas reversal chamber;
Fig. 5 is provided with the structural representation of arc deflector in the first spray chamber and gas reversal chamber.
Being labeled as in accompanying drawing: 1-spray column tower body, 2-slurry pool, 3-uptake zone, 4-the first dividing plate, 5-second partition, 6-the first spray chamber, 7-gas reversal chamber, 8-the second spray chamber, 9-gas approach, 10-exhanst gas outlet, 11-spraying layer, 12-demister, 13-the first deflector, 14-the second deflector, 15-the 3rd deflector.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Embodiments of the invention 1: as shown in Figure 1, a kind of sulfur dioxide near-zero release absorption tower for coal-burning power plant, comprise spray column tower body 1, bottom in spray column tower body 1 is slurry pool 2, the region of slurry pool 2 tops is uptake zone 3, in spray column tower body 1, be provided with the first dividing plate 4 and second partition 5, uptake zone 3 is divided into the first spray chamber 6 by the first dividing plate 4 and second partition 5, gas reversal chamber 7 and the second spray chamber 8, the first dividing plate 4 extends in slurry pool 2 from the top in spray column tower body 1, second partition 5 extends to the top of spray column tower body 1 from the top of slurry pool 2, one side of spray column tower body 1 is provided with the gas approach 9 being communicated with the first spray chamber 6, and opposite side is provided with the exhanst gas outlet 10 being communicated with the second spray chamber 8, in the first spray chamber 6 and the second spray chamber 8, be equipped with spraying layer 11.The top of the spraying layer 11 in the second spray chamber 8 is also provided with demister 12.The first dividing plate 4 and second partition 5 are arranged in parallel.Gas approach 9 is positioned at the middle and lower part of spray column tower body 1, and exhanst gas outlet 10 is positioned at the top of spray column tower body 1.
As shown in Figure 2, the cross sectional shape of described spray column tower body 1 along continuous straight runs is circular.
Embodiments of the invention 2: as shown in Figure 4, a kind of sulfur dioxide near-zero release absorption tower for coal-burning power plant, comprise spray column tower body 1, bottom in spray column tower body 1 is slurry pool 2, the region of slurry pool 2 tops is uptake zone 3, in spray column tower body 1, be provided with the first dividing plate 4 and second partition 5, uptake zone 3 is divided into the first spray chamber 6 by the first dividing plate 4 and second partition 5, gas reversal chamber 7 and the second spray chamber 8, the first dividing plate 4 extends in slurry pool 2 from the top in spray column tower body 1, second partition 5 extends to the top of spray column tower body 1 from the top of slurry pool 2, one side of spray column tower body 1 is provided with the gas approach 9 being communicated with the first spray chamber 6, and opposite side is provided with the exhanst gas outlet 10 being communicated with the second spray chamber 8, in the first spray chamber 6 and the second spray chamber 8, be equipped with spraying layer 11.The top of the spraying layer 11 in the second spray chamber 8 is also provided with demister 12.The top corners place of described the first spray chamber 6 is provided with the first deflector 13, and the top corners of gas reversal chamber 7 and bottom comers place are equipped with second top of deflector 14, the first dividing plates 4 and the below of second partition 5 is equipped with the 3rd deflector 15.
The first deflector 13 and the second deflector 14 adopt dull and stereotyped.Gas approach 9 is positioned at the middle and lower part of spray column tower body 1, and exhanst gas outlet 10 is positioned at the top of spray column tower body 1.
As shown in Figure 3, the cross sectional shape of spray column tower body 1 along continuous straight runs is square.
Embodiments of the invention 3: as shown in Figure 5, a kind of sulfur dioxide near-zero release absorption tower for coal-burning power plant, comprise spray column tower body 1, bottom in spray column tower body 1 is slurry pool 2, the region of slurry pool 2 tops is uptake zone 3, in spray column tower body 1, be provided with the first dividing plate 4 and second partition 5, uptake zone 3 is divided into the first spray chamber 6 by the first dividing plate 4 and second partition 5, gas reversal chamber 7 and the second spray chamber 8, the first dividing plate 4 extends in slurry pool 2 from the top in spray column tower body 1, second partition 5 extends to the top of spray column tower body 1 from the top of slurry pool 2, one side of spray column tower body 1 is provided with the gas approach 9 being communicated with the first spray chamber 6, and opposite side is provided with the exhanst gas outlet 10 being communicated with the second spray chamber 8, in the first spray chamber 6 and the second spray chamber 8, be equipped with spraying layer 11.The top of the spraying layer 11 in the second spray chamber 8 is also provided with demister 12.The first dividing plate 4 and second partition 5 are arranged in parallel.The top corners place of described the first spray chamber 6 is provided with the first deflector 13, and the top corners of gas reversal chamber 7 and bottom comers place are equipped with second top of deflector 14, the first dividing plates 4 and the below of second partition 5 is equipped with the 3rd deflector 15.The first deflector 13 and the second deflector 14 adopt arc.Gas approach 9 is positioned at the middle and lower part of spray column tower body 1, and exhanst gas outlet 10 is positioned at the top of spray column tower body 1.
As shown in Figure 2, the cross sectional shape of spray column tower body 1 along continuous straight runs is circular or square.
Operation principle of the present invention: enter with the flow velocity of 10m/s～15m/s from being positioned at gas approach 9 spray column tower body 1 from the flue gas that contains sulfur dioxide of boiler, then upwards with the flow velocity of 3.5m/s～3.8m/s by the first spray chamber 6, come in contact with the gypsum slurries adverse current of spraying layer 11 ejection in this region, the temperature of flue gas reduces, humidity increases, flue gas by the first spray chamber 6 is cooling, approach or the state that reaches capacity, then by the first dividing plate upper opening, enter the gas reversal chamber 7 between the first dividing plate 4 and second partition 5, flue gas is here turned and is moved downward, flow velocity with 8m/s～10m/s flows through, enter afterwards the second spray chamber 8, and with the second spray chamber 8 in spraying layer 11 counter current contacting, in the process contacting with the gypsum slurries spraying out at flue gas, two Gasization sulphur are here further absorbed in gypsum slurries, flue gas through washing in this region enters demister 12, remove the gypsum slurries of carrying secretly in flue gas, last clean flue gas flows out from exhanst gas outlet 10.By two dividing plates are set, successfully realize two counter current contacting of flue gas and sprayed slurry, be conducive to improve the assimilation effect to sulfur dioxide, successfully realized two Intensive Design theories that absorption tower unites two into one.
Claims (7)
1. the sulfur dioxide near-zero release absorption tower for coal-burning power plant, comprise spray column tower body (1), it is characterized in that: the bottom in spray column tower body (1) is slurry pool (2), the region of slurry pool (2) top is uptake zone (3), in spray column tower body (1), be provided with the first dividing plate (4) and second partition (5), uptake zone (3) is divided into the first spray chamber (6) by the first dividing plate (4) and second partition (5), gas reversal chamber (7) and the second spray chamber (8), the first dividing plate (4) extends in slurry pool (2) from the top in spray column tower body (1), second partition (5) extends to the top of spray column tower body (1) from the top of slurry pool (2), one side of spray column tower body (1) is provided with the gas approach (9) being communicated with the first spray chamber (6), and opposite side is provided with the exhanst gas outlet (10) being communicated with the second spray chamber (8), in the first spray chamber (6) and the second spray chamber (8), be equipped with spraying layer (11).
2. the sulfur dioxide near-zero release absorption tower for coal-burning power plant according to claim 1, is characterized in that: the top of the spraying layer (11) in the second spray chamber (8) is also provided with demister (12).
3. the sulfur dioxide near-zero release absorption tower for coal-burning power plant according to claim 1, is characterized in that: the first dividing plate (4) and second partition (5) are arranged in parallel.
4. according to the sulfur dioxide near-zero release absorption tower for coal-burning power plant described in claim 1 or 2 or 3, it is characterized in that: the cross sectional shape of described spray column tower body (1) along continuous straight runs is for circular or square.
5. the sulfur dioxide near-zero release absorption tower for coal-burning power plant according to claim 4, it is characterized in that: the top corners place of described the first spray chamber (6) is provided with the first deflector (13), the top corners of gas reversal chamber (7) and bottom comers place are equipped with the second deflector (14); The below of the top of the first dividing plate (4) and second partition (5) is equipped with the 3rd deflector (15).
6. the sulfur dioxide near-zero release absorption tower for coal-burning power plant according to claim 5, is characterized in that: the first deflector (13) and the second deflector (14) adopt flat board or arc.
7. the sulfur dioxide near-zero release absorption tower for coal-burning power plant according to claim 1, it is characterized in that: gas approach (9) is positioned at the middle and lower part of spray column tower body (1), exhanst gas outlet (10) is positioned at the top of spray column tower body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410322796.2A CN104096471A (en) | 2014-07-08 | 2014-07-08 | Near-zero sulfur dioxide emission absorption tower for coal-fired power plant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410322796.2A CN104096471A (en) | 2014-07-08 | 2014-07-08 | Near-zero sulfur dioxide emission absorption tower for coal-fired power plant |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106310912A (en) * | 2016-08-29 | 2017-01-11 | 郭嘉威 | Wet desulfurization tower and desulfurization technology thereof |
| CN107875819A (en) * | 2017-12-15 | 2018-04-06 | 河南省正大环境科技咨询工程有限公司 | A kind of wet flue gas desulfurization tower |
| CN109266845A (en) * | 2018-11-21 | 2019-01-25 | 桂阳银龙科技有限责任公司 | A kind of production of zinc calcine and smoke processing system and method |
| CN115090083A (en) * | 2022-08-22 | 2022-09-23 | 天津长芦汉沽盐场有限责任公司 | Partition board absorption tower, air bromine blowing system and air bromine blowing method |
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| JP2002136835A (en) * | 2000-11-01 | 2002-05-14 | Babcock Hitachi Kk | Two-chamber type wet flue gas desulfurization apparatus |
| CN2608111Y (en) * | 2003-04-18 | 2004-03-31 | 杨健 | High concentration smoke desulfur and dust removing equipment |
| CN102974210A (en) * | 2012-11-16 | 2013-03-20 | 浙江浙大海元环境科技有限公司 | Built-in double-chamber double-value wet type desulfurizing tower device |
| CN204051422U (en) * | 2014-07-08 | 2014-12-31 | 中国华电工程(集团)有限公司 | For the sulfur dioxide near-zero release absorption tower of coal-burning power plant |
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2014
- 2014-07-08 CN CN201410322796.2A patent/CN104096471A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002136835A (en) * | 2000-11-01 | 2002-05-14 | Babcock Hitachi Kk | Two-chamber type wet flue gas desulfurization apparatus |
| CN2608111Y (en) * | 2003-04-18 | 2004-03-31 | 杨健 | High concentration smoke desulfur and dust removing equipment |
| CN102974210A (en) * | 2012-11-16 | 2013-03-20 | 浙江浙大海元环境科技有限公司 | Built-in double-chamber double-value wet type desulfurizing tower device |
| CN204051422U (en) * | 2014-07-08 | 2014-12-31 | 中国华电工程(集团)有限公司 | For the sulfur dioxide near-zero release absorption tower of coal-burning power plant |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106310912A (en) * | 2016-08-29 | 2017-01-11 | 郭嘉威 | Wet desulfurization tower and desulfurization technology thereof |
| CN107875819A (en) * | 2017-12-15 | 2018-04-06 | 河南省正大环境科技咨询工程有限公司 | A kind of wet flue gas desulfurization tower |
| CN107875819B (en) * | 2017-12-15 | 2024-01-30 | 辽宁特力环保科技有限公司 | Wet flue gas desulfurization tower |
| CN109266845A (en) * | 2018-11-21 | 2019-01-25 | 桂阳银龙科技有限责任公司 | A kind of production of zinc calcine and smoke processing system and method |
| CN115090083A (en) * | 2022-08-22 | 2022-09-23 | 天津长芦汉沽盐场有限责任公司 | Partition board absorption tower, air bromine blowing system and air bromine blowing method |
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Address after: 100160 Beijing, Fengtai District Automobile Museum Road, No. 6, Ying Kun century A block, floor 11 Applicant after: CHINA HUADIAN ENGINEERING CO., LTD. Applicant after: Huadian Environmental Protection System Engineering Co., Ltd. Address before: 100160 Beijing, Fengtai District Automobile Museum Road, No. 6, Ying Kun century A block, floor 11 Applicant before: China Huadian Engineering (Group) Co., Ltd. Applicant before: Huadian Environmental Protection System Engineering Co., Ltd. |
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Application publication date: 20141015 |
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